Industrial SP83 Hammer Union Forged NPT Class 3M

4-inch forged steel hammer union with NPT threads designed for MSS SP-83 and AAR SP-83 Class 3M service (3M denotes a 3,000 psi rating). The body is carbon steel forged to ASTM A105/SA105, delivering robust strength for high‑pressure transfer lines. Following MSS SP-83 dimensional and tolerance requirements, the three‑piece union provides reliable alignment and leak‑tight performance when paired with compatible hammer union fittings. This NPT-ended hammer union is intended for oil and gas facilities, petrochemical plants, and railcar equipment where durable, code‑compliant connections are essential. Typical applications include connecting pipe sections, valves, and pumps in upstream and midstream operations and in railway tank car loading/unloading setups that require MSS SP-83/AAR SP-83 compliance. Its adherence to these standards supports interchangeability with other components manufactured to MSS SP-83 and AAR SP-83 specifications.